Only the promoters would really be able to say but i imagine it would not of been too much giving that at the time Silva was pretty much a nobody when it comes to big names at the time.

There was a lot of hype on Anderson Silva when he fought in Japan, (when he was at welterweight ) tipped to be the next big thing at that time (when he was a welterweight) after beating Carlos Newton. I wouldn't say he was a nobody while he was a welterweight earlier in his career. I'm pretty sure he was paid well...